I have plastic wall tile in a half bath and am replacing the wall hung face bowl with a pedestal face bowl. I am worried that when the wall hung face bowl is removed some of the tile may get damaged. Two questions. What is the best way to remove the face bowl hopefully without damaging the tile. And, if some of the tiles do get damaged does anyone know a source where I might find a few for replacement. I need yellow and/or solid black. I live in St. Louis, MO. HELP!